tangyl’s gists

tangyl / gcsettings.sh

Created August 6, 2020 04:55 — forked from svanoort/gcsettings.sh

Blessed GC settings for big servers

	# Base settings and GC logging
	-server -XX:+AlwaysPreTouch # First should be default, but we make it explicit, second pre-zeroes memory mapped pages on JVM startup -- improves runtime performance
	# -Xloggc:gc-%t.log # CUSTOMIZE LOCATION HERE - $path/gc-%t.log -- the %t in the gc log file path is so we get a new file with each JVM restart
	-XX:NumberOfGCLogFiles=5 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=20m # Limits the number of files, logs to folder
	-XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause
	-XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy # gather info on object age & reference GC time for further tuning if needed.

	# G1 specific settings -- probably should be default for multi-core systems with >2 GB of heap (below that, default is probably fine)
	-XX:+UseG1GC
	-XX:+UseStringDeduplication

tangyl / README.md

Last active February 20, 2019 05:13 — forked from mrbar42/README.md

bash scripts to create VOD HLS stream with ffmpeg almighty (tested on Linux and OS X)

running:

bash create-vod-hls.sh beach.mkv

will produce:

    beach/
      |- playlist.m3u8
 |- 360p.m3u8

tangyl / hive_external_json.sql

Created October 31, 2018 05:17

create hive external table with schema from json

	create external table if not exists {{table_name}}(
	url string,
	title string,
	duration int,
	play_count int,
	created_time bigint,
	last_crawl_time bigint
	)
	ROW FORMAT SERDE
	'org.openx.data.jsonserde.JsonSerDe'

tangyl / hive_external_table.sql

Created October 31, 2018 05:15

create hive external table

	drop table if exist reddit_post;
	create external table reddit_posts(
	post_data string
	)
	location '<hdfs\|s3 path>';

tangyl / ehcache.xml

Created October 25, 2018 08:10

ehcache.xml for play framework

	<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd" updateCheck="false">
	<defaultCache
	maxElementsInMemory="10000000"
	eternal="false"
	timeToIdleSeconds="120"
	timeToLiveSeconds="120"
	overflowToDisk="false"
	maxElementsOnDisk="10000000"
	diskPersistent="false"
	diskExpiryThreadIntervalSeconds="120"

tangyl / instaclip.user.js

Last active November 1, 2020 19:03

instaclip.user.js

	// ==UserScript==
	// @name InstaClip Poster
	// @namespace http://tampermonkey.net/
	// @version 0.1
	// @description Create InstaClip post from current video page
	// @author Yilong Tang [email protected]
	// @match https://www.facebook.com/*
	// @match https://www.instagram.com/*
	// @match https://www.youtube.com/*
	// @match http://road-to-champion-2018.op-mobile.opera.com/assets/view/instaclip.html

tangyl / install-emacs25

Last active September 25, 2017 10:46

install emacs25 in ubuntu

	#!/usr/bin/env

	sudo apt-get install build-essential wget libncurses-dev
	wget http://mirrors.ibiblio.org/gnu/ftp/gnu/emacs/emacs-25.3.tar.gz -O /tmp/emacs-25.3.tar.gz
	cd /tmp
	tar -zxvf emacs-25.3.tar.gz
	cd emacs-25.3
	./configure --with-x=no
	make -j 8
	sudo make install

Yilong Tang tangyl